COMPLIANCE INFO_PRE 2019 - Laserfiche WebLink

Home Browse Search

WASTE DISCHARGE REQUIREMENTS 4 UNIVERSITY OF CALIFORNIA LAWRENCE LIVERMORE NATIONAL LABORATORY EXPERIMENTAL TEST SITE AND U.S. DEPARTMENT OF ENERGY ALAMEDA AND SAN JOAQUIN COUNTIES water to be cycled longer in each tower thus reducing total volume of blowdown by about 80 percent. However, the pH of Hetch Hetchy water is 9.4 which may result in cooling tower discharges continuing to have a higher pH than the range identified in the Basin Plan. 14. After Hetch Hetchy water deliveries begin, discharges from the 14 additional cooling towers will be engineered to ground through percolation systems. During any interruption in the Hetch Hetchy water supply, the discharge will have to return temporarily to the SWDC due to increased blowdown volumes generated while using a ground water supply. Discharges to SWDC will continue from these 14 cooling towers until the end of December 1994 when the engineered percolation systems are scheduled to be constructed and operational, according to information provided by the Discharger in the 28 February 1992 schedule for eliminating, where practical, blowdown discharges to SWDC. Attachment C summarizes discharge water quality data for the 14 cooling towers. 15. Untreated storm water discharge associated with industrial activities at Site 300 may occur at nine inactive waste disposal landfills; the open burn hazardous waste treatment facility at Building 829; and the Building 883 hazardous waste storage facility. Attachment A shows building, facility and landfill locations. All storm water discharges are to natural drainage courses. 16. Storm water discharge occurs after a significant storm causes runoff at the locations listed in Finding 15. Discharges from the landfills, Pits 1-5, 7, 8 and 9, are into SWDC which discharge into Elk Ravine which eventually discharges to Corral Hollow Creek. Landfill Pit 6 and facilities at Buildings 829 and 883 discharge through SWDC directly into Corral Hollow Creek. Storm water discharging from the perimeter drain around Pit 7 is to the north into an unnamed ravine which drains toward the northwest boundary of the site. 17. The Discharger prepared a storm water monitoring program according to the requirements in the general permit for storm water discharge. The Discharger monitors storm water discharge at six locations which are shown on Attachment A. 18. Potential contaminants in the storm water at each monitoring point are representative of typical runoff from undeveloped areas. The Discharger monitors for total suspended solids, pH, total organic carbon (TOC), total organic halides (TOX), and specific conductance at all monitoring points. Samples from monitoring point 3N829 are also analyzed for high explosives to monitor storm water from the hazardous